Student view: visual indicator for new files/content yet to be viewed

For the courses and programs that require professors to upload an inundating number of files, perhaps there could be a visual indicator of some sort used as a signal to the student(s) that a file is new or hasn't been viewed. An indicator as simple as a gray dot, or just bold font (much like an email that has yet to be read) would undoubtedly aid students in finding which files he/she has not yet viewed. The instance in which I operate already features a gray dot when a new grade is posted; once that grade has been viewed by the student the gray dot is no longer present. The Educational Technology department at the college I attend acknowledged this idea but labeled it as a request they could not fulfill.